Irradiation of 6-cyanophenanthridine -oxide in the presence of 2,3-dimethyl-2-butene resulted in a novel type of photoaddition with rearrangement to give 2-cyano-8,8,9,9-tetramethyl-[d,f]-dibenzo-1,3-oxazonin and 6-(2-cyano-1,1,2-trimethylpropyloxy)phenanthridine as a minor product, which is regarded as strong evidence for an initial photochemical generation of a biradical, and not an oxaziridine as
在
2,3-二甲基-2-丁烯的存在下照射6-
氰基
菲啶-氧化物导致了一种新型的光加成反应,并进行了重排,得到了2-
氰基-8,8,9,9-四甲基-[d,f]。 -dibenzo-1,3-oxazonin和6-(2-cyano-1,1,2-三甲基丙氧基)
菲啶为次要产物,被认为是双自由基的初始光
化学生成的有力证据,而不是作为草酰氧的以前建议。